James f



(No Model.)

J. F. MGELROY.

CAR HEATER.

No. 452,349. Patented May l2, 1891.

mn-ess es: y ff@ /Qwe Jamas 1/ l f f f5/'1.

UNITED STATES PATENT OFFICE.

JAMES F. MCELROY, OF ALBANY, NEIV YORK, ASSIGNOR TO THE CONSOLI- DATED OAR HEATING COMPANY, OF SAME PLACE.

CAR-HEATER.

SPECIFICATION forming part of Letters Patent No. 452,349, dated May 12, 1891.

Application led June 30, 1890.

To a/ZZ whom t may concern.-

Be it known that I, JAMES F. MGELEOY, a citizen of the United States, residing at Albany, in the county of Albany and State of New York, have invented certain new and useful Improvements in Oar-Heaters, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to an improvement in ear-heaters; and it consists in the construction and arrangement of parts more fully hereinafter described and claimed.

The object of my invention is to provide an improved means for preventing the overflow and drip from freezing.

In the accompanying drawings, Figure l is perspective view of my improved heater as applied to a car-heating apparatus, the piping on but one side of the car being shown. Fig. 2 is a top plan view of the heater. Fig. 3 is a vertical section thereof on line y y of Fig. 2. Fig. 4 is a vertical section thereof on line .e ,e of Fig. 2. Fig. 5 is a partial vertical section on line oc The system to which my heater is applied is of that class in which a hot-water circulation is heated and circulated by injecting steam therein, a suitable overflow-pipe being provided to carry off the accumulating water of condensation.

A are the circnlatingpipes within the car.

B is the outgoing pipe from the heater to the piping.

O is the return-pipe.

D is the overow-pipe, which is provided with a suitable valve E.

F is the main steam-supply pipe.

F is the branch steam-supply pipe.

G is the water-heater, placed beneath the car and into the top of which is connected Vthe outgoing pipe B and into the bottom is connected the return-pipe OA The water-heater consists of two castings d l), forming the casing, screw-threaded or othern wise secured together. Vithin the upper chamber are placed the screens c c', between which is packed gravel or other porous medium at the point of commingling of water and steam.

y 5o d is a steam-nozzle secured to the lower end Serial No. 357,180. (No model.)

of the steam-supply pipe e, which enters from the lower opening of the steam-passage f, formed in the upper part of the casing. The upper end of this passage connects with the steam-supply pipe F. The steam-nozzle is 5 5 perforated on its upper side only.

The lower casting has the side extensions g and h, the latter being apertured to receive the lower end of the return-pipe C. In the extension g is formed the steam-passage c', to 6o which the steam-supply pipe is connected, and the passage j for the overflow or drip pipe.

It will be seen that the steam-passage c' is always heated whenever steam is in the trainpipe, as the valve H controlling the steamsupply is above this point. The object of thishis to heat the drip or overflow pipe and to keep the water in the heater from freezing, and this is effected by having the steam-pipe 7o integral with the water-heater and lower end of the overow or drip pipe.

`I' is a drain-pipe connected to the base of the water-heate'nfrom which the water in the system may be allowed to escape.

D is the discharge end of the overiiowpipe, from which the water of condensation is discharged after leaving passage j.

I do not herein claim the arrangement of the supply, return, and overflow pipes be- 8o tween the heater and the radiator, nor the manner of supporting the heater by the pipes, as shown, as I have made these features the subject-matters of concurrently-pending applications, Serial No. 3el9,748, filed April 28, 8 5 1890, and Serial No. 378,733, filed January 22, 1891.

YVhat I claim as my invention is 1. In a car-heater, the combination, with a water-heater, of a steam-supply pipe passing 9o through the heater and returning thereto, a radiator, a pipe connecting the same with the heater, and an overflow-pipe leading out from the radiator and passing through the heater at a point adjacent to the supply, substan- 95 tially as described.

2. In a car-heater, the combination, with a water-heater, of a radiator connected to said heater and provided with an overfiow-pipe, a

steam-pipe entering the heater, and a steamroo Supply and overiiow passages formed in the heater' adjacent to each other, substantially as described.

3. In a ear-heater, the combination, with a water-heater, of a radiator connected therewith, an overiioW-passage and a steam-passage formed adjacent to each other in the heater, an overflow-pipe from the radiator enteringthe overflow-passage, a steam-supply ro pipo from the steam-passage leading into the heater and provided with a return-bend and a valve in the Steam-pipe, substantially as described.

In testimony whereof I afiix my signatu re in presence of two witnesses.

JAMES F. MCELROY. \\Vitnesses:

EDWIN A. SMITH, JOHN B. BRAIDWoon. 

